Detailed Explanation of the Technical Regulations for High-Yield Cultivation of Soybean with Sparse Planting

Technical Regulations for High-Yield Cultivation of Soybean with Sparse Planting:

1. Selection of dedicated varieties: Choose branching-type varieties with tall and luxuriant plants, strong stalks that do not lodge, a long flowering period, large flower clusters, a high pod-setting rate, tolerance to high fertilizer and water levels, and medium or medium-late maturity.

2. Land selection, tillage and fertilization: Choose flatland plots with high soil organic matter content and good moisture conditions, plots with a previous crop, and plots of equal fertility; the best previous crop is corn stubble, and organic fertilizer should be applied in increased amounts.

3. Sowing: Carefully select seeds. Seeds should be free of pests and diseases, uniform in size and plump. The sowing period is generally when the 5 cm soil temperature steadily exceeds 6°C. The density is 180,000 to 270,000 plants per hectare. Use precise double-row hill dropping on ridges, with a sowing depth of about 5 cm; apply seed fertilizer 3 to 5 cm below the seeds, and never apply the seeds and fertilizer together to avoid burning the seedlings.

4. Cultivation management: For sparse planting cultivation, carry out 3 to 4 cultivations to raise soil temperature, conserve moisture, promote soybean root growth and the nitrogen-fixing action of rhizobia; during the mid-growth period, pull large weeds by hand once. Foliar topdressing and pest and disease control. The more times foliar topdressing is applied, the more significant the yield increase; when pests and diseases occur, control can be carried out at the same time. Carry out the first topdressing at full bloom; carry out the second at the pod-setting stage, about 10 days after the first foliar topdressing; carry out the third foliar topdressing at the seed-filling stage, with the aim of promoting early maturity and increasing grain weight.

5. Timely harvest: Manual harvest should be carried out at the late yellow-ripe stage, and mechanical harvest should be carried out at the early full-ripe stage.